At Walmart, I saw a fairly cheap back-up camera for an RV and thought that maybe I might like to have this on my truck? But, I'm wondering whether the wireless transmitter can range 53' of trailer? At Amazon.com, there is a better model that has night vision, and the screen can toggle between several remote cameras. That would be cool. I'd like a camera mounted on my front center top of my trailer, to see what clearance problems I may be having, as well as on the rear trailer bumper to see who's tailgating me, or what the hell I'm backing into on a dark night at the truck stop. Anybody tried one of these things?
We are seen pretty much all garbage and beverage haulers use them now. Haven't seen any on semi trailers yet, that would be an excellent idea!
When I had my high dollar flat I considered buying one. I ran a lot of machinery trade show and new high tech machines in and out of plants and thought the camera would come in handy.
I've got one on my pickup, I tried one on a grain hopper for a while (mine was wired through an extra cord). It show's what's behind you but you can't really use it to back into a tight spot because you can't tell where the corners of the trailer are. I moved the one on the hopper so I could see to load without getting out of the truck. If you get one the size of the screen makes all the difference. If it's a small screen you can't see very well. I use the one on my pickup to see how close I am to a car when backing into a parking spot. Wireless is the way to go because you can move it anywhere you want. I've had 3 cameras, 2 had nigh vision and neither worked very well at night so don't let that influence your decision.
I have used a backup camera for several years, it makes situations much more simple and safe. Mine is a hard wire and I can connect to two camera"s , I'm sure there are wireless out there. The camera and monitor I have are used on trash trucks, rugged, enclosed camera. heavy duty case on monitor. Only draw back, is direct sun in line with the camera.